design principle
Single Source of Truth
Single Source of Truth
Also known as · SSOT · source ownership · one authoritative source
Definition
A principle that gives one authoritative source the meaning and write authority for a fact while treating other representations as derived state. It clarifies ownership and synchronization boundaries; it does not mean copies never exist.
Searchable examples
- notes/
- courses/
- apps/console/sql/
Short example
notes/ owns note bodies, while the Admin DB and Fly export are derived publication states.
source → authenticated admin upsert → DB read / Fly snapshot